# lab03 - The Physics of Light Sound LAB 03 CONSERVATION OF...

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Introduction Energy is a physical quantity that is conserved in our universe. This can be stated as follows: Energy cannot be created nor destroyed. The exception to this is in nuclear reactions where mass is turned into energy, which occurs only in the center of stars and in nuclear reactors. Thus mass is really a form of energy. In this lab, we will be testing if energy is conserved in an isolated system. We will drop a tennis ball from a known height and determining if the sum of the kinetic energy and gravitational energy at several points along its path as it falls remains Fxed. Formulae The kinetic energy of an object of mass m which is in motion with speed v is given by: K.E. = 1 2 mv 2 (1) The gravitational potential energy of an object suspended near the Earth’s surface at a height h is given by: G.P.E. = mgh (2) with g = 9.8 m/s 2 and m the mass of the object. Equipment

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lab03 - The Physics of Light Sound LAB 03 CONSERVATION OF...

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